... Periodic table Element symbol = Yb Atomic number = 70 Atomic weight = 173.04 ± 3 Abundance in the earth's crust = 3.0 ppm (41st place) Stable nuclide abundance ratio 168 Yb = 0.140%, 170 Yb = 3.03%, 171 Yb = 14.31%, 172 Yb = 21.82%, 173 Yb = 16.13%, 174 Yb = 31.84%, 176 Yb = 12.73% Melting point = 824 ° C Boiling point = 1427 ° C Specific gravity = 6.977 (α-ytterbium), 6.54 (β-ytterbium) Electron configuration = [Xe] 4f 14 5d 0 6s 2 Main oxidation number = II, III One of the lanthanides of the rare earth elements belonging to the IIIA group of the periodic table. In 1794, Johann Gadolin of Finland discovered a new oxide in a mineral from Ytterby near Stockholm, Sweden, which he named ytterbia after the place of origin. Various elements, including yttrium, were found in ytterbia, and in 1878 Jean Charles Galissard de Marignac of Switzerland discovered a new element, which he named ytterbium. *Some of the terminology explanations that mention "Ytterbia" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…周期表元素記号=Yb 原子番号=70原子量=173.04±3地殻中の存在度=3.0ppm(41位)安定核種存在比 168Yb=0.140%,170Yb=3.03%,171Yb=14.31%,172Yb=21.82%,173Yb=16.13%,174Yb=31.84%,176Yb=12.73%融点=824℃ 沸点=1427℃比重=6.977(α‐イッテルビウム),6.54(β‐イッテルビウム)電子配置=[Xe]4f145d06s2 おもな酸化数=II,III周期表第IIIA族に属する希土類元素のうちのランタノイドの一つ。1794年フィンランドのガドリンJohann Gadolinは,スウェーデンのストックホルム近郊イッテルビーYtterby産の鉱物から新しい酸化物を発見し,産地にちなんでイッテルビアとよんだ。イッテルビアからはイットリウムをはじめ各種の元素が見いだされたが,さらに1878年スイスのマリニャックJean Charles Galissard de Marignacは新元素を発見し,それをイッテルビウムとした。… ※「イッテルビア」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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